part of ear morphogenesis outer ear morphogenesis biological_process GO:0042473 The process in which the anatomical structures of the outer ear are generated and organized. The outer ear is the part of the ear external to the tympanum (eardrum). It consists of a tube (the external auditory meatus) that directs sound waves on to the tympanum, and may also include the external pinna, which extends beyond the skull. embryonic morphogenesis